CN103633649B - A kind of future-state alternating-current flow of power grid generates method - Google Patents
A kind of future-state alternating-current flow of power grid generates method Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
The present invention relates to a kind of future-state alternating-current flow of power grid and generate method.The method comprises the following steps: 1) select an electrical network real time execution section as initial section；2) grid generation planning data is obtained；3) maintenance scheduling for power systems data are obtained；4) bus load prediction data is obtained；5) interconnection planning data is obtained；6) electric network swim is driven to calculate；7) dominant eigenvalues deviation value is calculated；8) modified load injects；9) electric network swim is driven to calculate；10) set each electromotor and participate in adjustment state of exerting oneself as initial set value, obtain from the nominal parameter of electromotor；11) preserve the electrical network section after having adjusted, be successfully generated future-state trend.The present invention, based on true operation of power networks section, takes into full account future anticipation and the planning datas such as generation schedule, repair schedule, interconnection trading program, bus load prediction data, automatically adjusts and generate future-state AC power flow；The power flow solutions of future-state forecast accurately is provided, provides complete basic flow data for plan security check.
Description
Technical field
The invention belongs to electric power system dispatching automatic control technology field, particularly to a kind of future-state alternating-current flow of power grid
Generation method.
Background technology
In order to ensure power grid security economical operation, the network load according to prediction is needed to formulate the generation schedule of electrical network, inspection
The plan of repairing, interconnection trading program, and carry out power grid security assessment for the plan formulated.Traditional planning system generally uses
The mode of DC power flow carries out the security evaluation of future-state electric network swim, owing to DC power flow does not accounts for idle, voltage
Impact, error calculated is relatively big, have impact on the accuracy of electrical network forecast trend.The automatic event carried out on the basis of DC power flow
Barrier scanning there is also bigger error, is likely to result in hidden trouble for power grid security.
Summary of the invention
The invention aims to solve the problem that future-state AC power flow section is difficult to accurately generate, propose a kind of electricity
Net future-state AC power flow generates method.The present invention, based on true operation of power networks section, takes into full account generation schedule, maintenance
Future anticipation and the planning data such as plan, interconnection trading program, bus load prediction data, automatically adjust and generate future-state
AC power flow.AC power flow strictly meets electrical network unit output, the switch tool fortune of repair schedule formulation that generation schedule is formulated
The interconnection trend that line mode change, interconnection trading program are formulated, it is provided that the power flow solutions of future-state forecast accurately, for plan
Security Checking provides complete basic flow data.
For achieving the above object, the technical scheme is that a kind of future-state alternating-current flow of power grid generates method,
It is characterized in that, the method comprises the following steps:
1) select an electrical network real time execution section as initial section, adjust power system operating mode and generation load is exerted oneself
Make initial section meet electrical network typical case and run section requirement；And it is disconnected as the basis of future-state AC power flow to preserve this profile data
Face.
2) obtain grid generation planning data, according to the future-state trend time set, obtain each generating set and gain merit
Exert oneself；In the section of basis, meritorious the exerting oneself setting each electromotor is exerted oneself for generation schedule is meritorious；Set each electromotor ginseng
With adjustment state of exerting oneself for not participating in adjustment, represent the type unit during Load flow calculation during electrical network emergent power vacancy,
Unit output is constant.
3) obtain maintenance scheduling for power systems data, according to the future-state trend time set, obtain repair schedule breaker in middle cutter
Lock state changes；In the section of basis, set the switch tool state of change.
4) obtain bus load prediction data, according to the future-state trend time set, obtain in bus load prediction negative
Lotus is meritorious, reactive power flow；In the section of basis, meritorious, the idle injection trend of assumed load and load in bus load prediction
Meritorious, reactive power flow is consistent.
5) obtain interconnection planning data, according to the future-state trend time set, obtain system interconnection plan and gain merit
The most value added；Set the electromotor being connected with interconnection as outer net unit；Set outer net unit participate in exert oneself adjustment state as
Automatically adjusting, expression the type unit is during Load flow calculation during electrical network emergent power vacancy, and unit output will change automatically
With balancing power network load.
6) drive an electric network swim to calculate, from calculation of tidal current, obtain interconnection reality the most value added.Due to
Only outer net unit participates in automatically adjusting, and grid generation can only be undertaken by outer net unit with the imbalance power vacancy of load,The actual outer net unit output that value is gone out by Load flow calculation determines.
7) dominant eigenvalues deviation value is calculated；
8) modified load injects.Inject trend according to the deviation adjustment load of interconnection, the deviation of interconnection is considered the whole network
It is assigned to each load after loss inject, provides revised load to inject for Load flow calculation next time；
9) drive an electric network swim to calculate, obtain the interconnection reality calculated the most value added, dominant eigenvalues inclined
Difference；When dominant eigenvalues deviation valueLess than interconnection error set point(it is typically set to 0.005*
) time, automatically revise network load and terminate, enter step 10)；When dominant eigenvalues deviation valueMore than interconnection deviation setting
ValueTime, 7)-9) and circulation realize network load correction；
10) set each electromotor and participate in adjustment state of exerting oneself as initial set value, obtain from the nominal parameter of electromotor
Take.
11) preserve the electrical network section after having adjusted, be successfully generated future-state trend.
The beneficial effects of the method for the present invention is:
One aspect of the present invention, based on true operation of power networks section, takes into full account generation schedule, repair schedule, interconnection
Future anticipation and the planning datas such as trading program, bus load prediction data, the electric network swim section of generation completes to meet plan
Requirement.On the other hand, for plan unit output and the deviation of prediction load, by automatically revising network load, accurately mate
Unit output plan.Exchange forecast trend accuracy is high, and convergence is good, is conducive to carrying out accurate safety on the basis of this trend
Check, improve electric network security.
Advantages of the present invention is summarized as follows:
Take into full account the future anticipations such as generation schedule, repair schedule, interconnection trading program, bus load prediction data and
Planning data, it was predicted that power flow solutions is accurate.
Predict the prediction load provided according to bus load, automatically revise network load, accurately coupling unit output plan.
Calculating speed is fast, calculates error little.
Accompanying drawing explanation
Fig. 1 is the overall procedure block diagram that future-state alternating-current flow of power grid described in one embodiment of the invention generates method.
Detailed description of the invention
The future-state alternating-current flow of power grid that the present invention proposes generates method, describes in detail as follows in conjunction with drawings and Examples:
The future-state alternating-current flow of power grid that the present invention proposes generates method, as shown in Figure 1, comprises the following steps:
1) select an electrical network real time execution section as initial section, adjust power system operating mode and generation load is exerted oneself
Make initial section meet electrical network typical case and run section requirement.Preserve this profile data disconnected as the basis of future-state AC power flow
Face.
2) obtain grid generation planning data, according to the future-state trend time set, obtain each generating set and gain merit
Exert oneself.In the section of basis, meritorious the exerting oneself setting each electromotor is exerted oneself for generation schedule is meritorious；Set each electromotor ginseng
With adjustment state of exerting oneself for not participating in adjustment, represent the type unit during Load flow calculation during electrical network emergent power vacancy,
Unit output is constant.
3) obtain maintenance scheduling for power systems data, according to the future-state trend time set, obtain repair schedule breaker in middle cutter
Lock state changes.In the section of basis, set the switch tool state of change.
4) obtain bus load prediction data, according to the future-state trend time set, obtain in bus load prediction negative
Lotus is meritorious, reactive power flow.In the section of basis, meritorious, the idle injection trend of assumed load and load in bus load prediction
Meritorious, reactive power flow is consistent.
5) obtain interconnection planning data, according to the future-state trend time set, obtain system interconnection plan and gain merit
The most value added.Set the electromotor being connected with interconnection as outer net unit；Set outer net unit participate in exert oneself adjustment state as
Automatically adjusting, expression the type unit is during Load flow calculation during electrical network emergent power vacancy, and unit output will change automatically
With balancing power network load.
6) drive an electric network swim to calculate, from calculation of tidal current, obtain interconnection reality the most value added.Due to
Only outer net unit participates in automatically adjusting, and grid generation can only be undertaken by outer net unit with the imbalance power vacancy of load,The actual outer net unit output that value is gone out by Load flow calculation determines.
7) dominant eigenvalues deviation value is calculated:
(1)
8) modified load injects.Inject trend according to the deviation adjustment load of interconnection, the deviation of interconnection is considered the whole network
It is assigned to each load after loss inject, provides revised load to inject for Load flow calculation next time；Specifically comprise the following steps that
1. for calculation of tidal current last time, calculate the whole network generating set and go out force value, the whole network load injection value:
(2)
(3)
In formula (2), NG represents all units in electrical network；Represent jth unit meritorious go out force value, can be from tide
Stream calculation result obtains；Represent the station service power consumption rate of jth unit, can obtain from the nominal parameter of electromotor, logical
Often its numerical range is between 0-0.2；
In formula (3), ND represents all loads in electrical network；Represent the meritorious injection value of jth load, can be from tide
Stream calculation result obtains；
2. for calculation of tidal current last time, the whole network Network Loss Rate is calculated:
(4)
3. for calculation of tidal current last time, calculated load regulation coefficient:
(5)
4. all load injection values are revised:
(6)
9) drive an electric network swim to calculate, obtain the interconnection reality calculated the most value added, dominant eigenvalues inclined
Difference；When dominant eigenvalues deviation valueLess than interconnection error set point(it is typically set to 0.005*
) time, automatically revise network load and terminate, enter step 10)；When dominant eigenvalues deviation valueMore than interconnection deviation setting
ValueTime, 7)-9) and circulation realize network load correction；
10) set each electromotor and participate in adjustment state of exerting oneself as initial set value, obtain from the nominal parameter of electromotor
Take.
11) preserve the electrical network section after having adjusted, be successfully generated future-state trend.
Claims (1)
1. a future-state alternating-current flow of power grid generates method, it is characterised in that the method comprises the following steps:
1) select an electrical network real time execution section as initial section, adjust power system operating mode and generation load is exerted oneself at the beginning of making
Beginning section meets electrical network typical case and runs section requirement；And preserve this profile data basic section as future-state AC power flow；
2) obtain grid generation planning data, according to the future-state trend time set, obtain that each generating set is meritorious exerts oneself；
In the section of basis, meritorious the exerting oneself setting each electromotor is exerted oneself for generation schedule is meritorious；Set each electromotor to participate in out
Power adjusts state for not participating in adjustment, represent the type unit during Load flow calculation during electrical network emergent power vacancy, unit
Exert oneself constant；
3) obtain maintenance scheduling for power systems data, according to the future-state trend time set, obtain repair schedule breaker in middle disconnecting link shape
State changes；In the section of basis, set the switch tool state of change；
4) obtaining bus load prediction data, according to the future-state trend time set, obtaining load in bus load prediction has
Merit, reactive power flow；In the section of basis, meritorious, the idle injection trend of assumed load predict with bus load in load meritorious,
Reactive power flow is consistent；
5) obtaining interconnection planning data, according to the future-state trend time set, acquisition system interconnection plan is meritorious always to be added
Value；Set the electromotor being connected with interconnection as outer net unit；Set outer net unit to participate in exerting oneself adjustment state as automatically
Adjusting, expression the type unit is during Load flow calculation during electrical network emergent power vacancy, and unit output will change automatically with flat
Weighing apparatus network load；
6) drive an electric network swim to calculate, from calculation of tidal current, obtain interconnection reality the most value added；
Owing to only outer net unit participates in automatically adjusting, the imbalance power vacancy of grid generation and load can only be by outer net unit
Undertake,The actual outer net unit output that value is gone out by Load flow calculation determines；
7) dominant eigenvalues deviation value is calculated；
8) modified load injects；
Inject trend according to the deviation adjustment load of interconnection, after the deviation of interconnection is considered the whole network loss, be assigned to each load
Inject, provide revised load to inject for Load flow calculation next time；
9) drive an electric network swim to calculate, obtain the interconnection reality calculated the most value added, dominant eigenvalues deviation value；When dominant eigenvalues deviation valueLess than interconnection error set point, interconnection error set pointIt is set to 0.005*, automatically revise network load and terminate, enter step 10)；When dominant eigenvalues deviation valueMore than interconnection error set pointTime, carry out step 7) 9) circulation realize network load correction；
10) set each electromotor and participate in adjustment state of exerting oneself as initial set value, obtain from the nominal parameter of electromotor；
11) preserve the electrical network section after having adjusted, be successfully generated future-state trend.
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| CN104318391A (en) * | 2014-10-24 | 2015-01-28 | 中国南方电网有限责任公司 | Method for implementing plan security check on basis of power grid operation service bus |
| CN104463462A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Power grid future state model maintenance tool |
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| CN109977444B (en) * | 2017-12-28 | 2020-09-25 | 广东电网有限责任公司电力调度控制中心 | Bus load prediction data correction method for power generation plan optimization |
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| CN110543696B (en) * | 2019-08-15 | 2022-09-16 | 国电南瑞科技股份有限公司 | Method for small unmodeled unit to participate in electric power market clearing and safety check |
| CN111244953B (en) * | 2020-03-17 | 2023-03-28 | 国网陕西省电力公司 | Reactive voltage automatic control method based on future power flow state of power grid |
| CN111799798B (en) * | 2020-07-01 | 2022-09-30 | 国电南瑞科技股份有限公司 | Method and system for improving accuracy of future state load flow calculation result |
| CN112001540B (en) * | 2020-08-21 | 2024-09-27 | 中国电力科学研究院有限公司 | Polymorphic division day-ahead plan and market clearing method, system, equipment and medium |
| CN112560227B (en) * | 2020-11-25 | 2022-06-14 | 国网河北省电力有限公司 | Simulation rehearsal method for power grid dispatching day-ahead plan |
| CN112865107B (en) * | 2021-01-11 | 2022-08-30 | 国网山西省电力公司忻州供电公司 | Regional power grid voltage reactive power day-ahead forecasting method based on load prediction |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325337A (en) * | 2008-07-25 | 2008-12-17 | 河南省电力公司 | Power grid operation four-level gradient safety early warning method |
| CN101714241A (en) * | 2009-12-03 | 2010-05-26 | 浙江省电力公司 | System for automatically generating single-wire tidal current diagram of large-screen power transmission network during power scheduling |
| CN102082437A (en) * | 2009-11-30 | 2011-06-01 | 吉林省电力有限公司长春供电公司 | Grid no-power vacancy calculating and optimizing device |
-
2013
- 2013-12-19 CN CN201310699286.2A patent/CN103633649B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325337A (en) * | 2008-07-25 | 2008-12-17 | 河南省电力公司 | Power grid operation four-level gradient safety early warning method |
| CN102082437A (en) * | 2009-11-30 | 2011-06-01 | 吉林省电力有限公司长春供电公司 | Grid no-power vacancy calculating and optimizing device |
| CN101714241A (en) * | 2009-12-03 | 2010-05-26 | 浙江省电力公司 | System for automatically generating single-wire tidal current diagram of large-screen power transmission network during power scheduling |
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